Grades are a hygiene check, not a security guarantee.

MCP, MCP server

Chrono Rag

Ask questions about Project Chrono and PyChrono and get answers grounded in Chrono's own source code, demos, and documentation, with the files cited.

Compatibility: Not stated.

Grade B

Minor issues only, no Medium or High. Worth a quick look at the findings below before installing.

Graded by PlugVetRubric v2

Not a guarantee. A hygiene check of the source at the commit shown, not a security audit.

PERMISSION_DELETE_FILES NETWORK_NO_FIXED_HOST SECRETS_PATH_DOTENV SECRETS_ENV_READ

Why this grade

  • PERMISSION_DELETE_FILES Low

    Contains a call that can delete files.

    scripts/setup_env.py, line 19 return subprocess.run([conda, *args], check=True, text=True,

  • NETWORK_NO_FIXED_HOST Low

    Makes a network call whose host is not written as a fixed address.

    frontend/src/App.jsx, line 30 const res = await fetch('/search', {

  • SECRETS_PATH_DOTENV Low

    Mentions a .env file.

    src/chrono_rag/webapp.py, line 81 "ANTHROPIC_API_KEY / OPENAI_API_KEY (e.g. in a .env file), or "

  • SECRETS_ENV_READ Note

    Reads an environment variable whose name contains KEY, SECRET, TOKEN, PASSWORD or CREDENTIAL.

    src/chrono_rag/core/config.py, line 99 v = os.getenv("CHRONO_RAG_LLM_API_KEY")

Any High, or two or more Medium findings, give D. One Medium gives C. Low findings or a security Note give B. Each code names a finding behind the letter.

Grades are a hygiene check of the source at the commit shown, on the date checked, not a security audit or a guarantee. The free directory grades are automated. Before release, a PlugVet engineer reviews every paid report and any grade we hold back, including all F grades, against the source code and the evidence we quote.

What was checked

Plain notes from the hygiene checks.

  • Permissions

    Concern

    can delete files.

    PERMISSION_DELETE_FILES

    scripts/setup_env.py, line 19

    return subprocess.run([conda, *args], check=True, text=True,

    src/chrono_rag/preprocess/build_index.py, line 92

    out = subprocess.run(["git", "-C", repo, "rev-parse", "HEAD"],

    src/chrono_rag/preprocess/build_index.py, line 101

    out = subprocess.run(["git", "-C", repo, *args], capture_output=True, text=True, check=True)

    Show more

    src/chrono_rag/preprocess/merge_shards.py, line 90

    shutil.rmtree(out)

    src/chrono_rag/surfaces/cli.py, line 274

    shutil.rmtree(staged, ignore_errors=True) # already gone after a successful swap

    src/chrono_rag/surfaces/cli.py, line 278

    shutil.rmtree(backup, ignore_errors=True)

  • Install and update

    Pass

    No install-time script found, and dependencies are pinned or absent.

  • Network

    Concern

    can reach a host that is not written as a fixed address.

    NETWORK_NO_FIXED_HOST

    frontend/src/App.jsx, line 30

    const res = await fetch('/search', {

    frontend/src/App.jsx, line 52

    // fetch() network failure: the backend is not reachable at all

    src/chrono_rag/surfaces/cli.py, line 102

    return urllib.request.urlopen(req, timeout=60)

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_ENV_READ SECRETS_PATH_DOTENV

    src/chrono_rag/webapp.py, line 81

    "ANTHROPIC_API_KEY / OPENAI_API_KEY (e.g. in a .env file), or "

    src/chrono_rag/core/config.py, line 99

    v = os.getenv("CHRONO_RAG_LLM_API_KEY")

    src/chrono_rag/inference/llm.py, line 71

    if os.getenv("ANTHROPIC_API_KEY"):

    Show more

    src/chrono_rag/inference/llm.py, line 106

    key = self._api_key or config.llm_api_key() or os.getenv("ANTHROPIC_API_KEY")

    src/chrono_rag/inference/llm.py, line 120

    key = self._api_key or config.llm_api_key() or os.getenv("OPENAI_API_KEY")

    .env.example, line 5

    # Copy to `.env` and fill in what you use; `.env` is gitignored.

    .gitignore, line 1

    .env

    README.md, line 107

    may also live in a `.env` file, see [.env.example](.env.example)), then run the backend and the

    SECURITY.md, line 20

    3. API keys are read from the environment (or a local `.env`) and are never logged or sent

    frontend/README.md, line 31

    `OPENAI_API_KEY`, e.g. via a `.env` file, see `.env.example` at the repo root) or "Local LLM"

  • Agent instructions

    Pass

    No instruction to ignore earlier instructions or to hide a step.

  • Obfuscation

    Pass

    No encoded or minified payload found.

  • Licence

    Pass

    A licence file is present (LICENSE).

  • Maintainer activity

    Pass

    The latest commit is within the last 365 days.

Note

Hygiene check of commit f3146ee0d1ce. can delete files. can reach a host that is not written as a fixed address. reads a credential or environment file.

Date and source

Date checked:

View source

github.com

Commit graded: f3146ee0d1ce8c27b6d81c86977ca057838b4e54

This link goes to the original host. PlugVet does not host or check what you download from there, and installing it is your own decision and risk.

Read how this letter is chosen